"Not a registered class"
Solution
The speech file is damaged


Right click on 'Start' at the bottom left hand side of your screen
Choose 'explore'
A window will open up and you
will need to click on the folder which says WWS2002-6 (this
will be on the left hand side).


Choose the folder labelled 'Redist'
Double click on the file MSTTSL.EXE (Microsoft text
to speech engine)
Follow the instructions. It shold re-install your speech
engines.
Repeat by opening the folder api and double click on the
file spchapi.exe.